KVM: x86/xen: Fix cleanup logic in emulation of Xen schedop poll hypercalls

{
  "id": "067df46f669be52974f87fbc7418c8ef1e76996005bbbafe0b2edef2bcb6804d",
  "url": "https://osv.dev/vulnerability/CVE-2025-38469",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "KVM: x86/xen: Fix cleanup logic in emulation of Xen schedop poll hypercalls",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: KVM: x86/xen: Fix cleanup logic in emulation of Xen schedop poll hypercalls kvm_xen_schedop_poll does a kmalloc_array() when a VM polls the host for more than one event channel potr (nr_ports > 1). After the kmalloc_array(), the error paths need to go through the \"out\" label, but the call to kvm_read_guest_virt() does not. [Adjusted commit message. - Paolo]",
    "evidence": "osv:CVE-2025-38469",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.6.100",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.40",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.15.8",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2025-38469",
      "aliases": [
        "CVE-2025-38469"
      ],
      "affected": [
        {
          "ranges": [
            {
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              "type": "GIT",
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                  "fixed": "5a53249d149f48b558368c5338b9921b76a12f8c"
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          ],
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          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
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              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
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                {
                  "fixed": "6.12.40"
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              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
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                  "introduced": "6.13.0"
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                {
                  "fixed": "6.15.8"
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          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-38469.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:32.825524448Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/061c553c66bc1638c280739999224c8000fd4602",
        "https://git.kernel.org/stable/c/3ee59c38ae7369ad1f7b846e05633ccf0d159fab",
        "https://git.kernel.org/stable/c/5a53249d149f48b558368c5338b9921b76a12f8c",
        "https://git.kernel.org/stable/c/fd627ac8a5cff4d45269f164b13ddddc0726f2cc",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38469.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-38469",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38469.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-38469",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 499825,
  "published_at": "2025-07-28T11:21:30.992+00:00"
}